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According to recent reports, Kindle Colorsoft displays are showing yellow discoloration bands along their bottom and sides - an issue traced to Amazon's use of a different OCA than that used in grayscale e-paper displays. This change was implemented to enhance the limited contrast capabilities of E Ink's Kaleido color e-paper technology. While component suppliers have developed several hardware solutions, Amazon seems to be leaning toward a software-based fix. https://t.co/rdgVGdZqNO